CN117693916A

CN117693916A - Method, device, medium and product for determining relation between PTRS port and DMRS port

Info

Publication number: CN117693916A
Application number: CN202280001079.2A
Authority: CN
Inventors: 高雪媛
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2024-03-12
Also published as: WO2023185490A1; WO2023184245A1

Abstract

A method, a device, a medium and a product for determining the relation between a PTRS port and a DMRS port belong to the field of communication. The method comprises the following steps: under the condition that n CW corresponding target layer mapping schemes are adopted, determining an association relationship between an uplink PTRS port and an uplink DMRS port based on DCI; wherein, the maximum number of the uplink DMRS ports is 8; n has a value of 1 or 2; the target layer mapping scheme is a layer mapping scheme of type 1 or a layer mapping scheme of type 2.

Description

Method, device, medium and product for determining relation between PTRS port and DMRS port

Technical Field

The present disclosure relates to the field of communications, and in particular, to a method, apparatus, medium, and product for determining a relationship between a PTRS port and a DMRS port.

Background

In a 5G New Radio, NR, system, a phase tracking reference signal (Phase Tracking Reference Signal, PTRS) is designed for estimation of co-phase errors (Common Phase Error, CPE).

For NR uplink transmission, the communication protocol only supports maximum 4-layer transmission. Therefore, in the NR uplink transmission process, a User Equipment (UE) adopts a layer mapping scheme from 1 Codeword (CW) to 1 to 4 layers; for the layer mapping scheme described above, the UE determines one or two uplink DMRS ports associated with an uplink PTRS port from among 4 uplink DMRS ports, and transmits demodulation reference signals (Demodulation Reference Signal, DMRS) through at most 4 antenna ports.

Disclosure of Invention

The embodiment of the disclosure provides a method, a device, a medium and a product for determining the relation between a PTRS port and a DMRS port. The technical scheme is as follows:

according to an aspect of an embodiment of the present disclosure, there is provided a method of determining a relationship between a PTRS port and a DMRS port, the method being performed by a terminal, the method including:

under the condition that a target layer mapping scheme corresponding to n code words is adopted, determining an association relationship between an uplink PTRS port and an uplink DMRS port based on DCI;

wherein, the maximum number of the uplink DMRS ports is 8; the value of n is 1 or 2; the target layer mapping scheme is a layer mapping scheme of type 1 or a layer mapping scheme of type 2.

According to an aspect of an embodiment of the present disclosure, there is provided a method of determining a relationship between a PTRS port and a DMRS port, the method being performed by a network device, the method comprising:

transmitting downlink control information to a terminal, wherein the downlink control information is used for indicating the association relationship between an uplink PTRS port and an uplink DMRS port under the condition that the terminal adopts a target layer mapping scheme corresponding to n code words;

According to another aspect of an embodiment of the present disclosure, there is provided an apparatus for determining a relationship between a PTRS port and a DMRS port, the apparatus including:

the first processing module is configured to determine an association relationship between an uplink PTRS port and an uplink DMRS port based on DCI under the condition that n CW corresponding target layer mapping schemes are adopted;

the second sending module is configured to send downlink control information to the terminal, wherein the downlink control information is used for indicating the association relationship between the uplink PTRS port and the uplink DMRS port under the condition that the terminal adopts a target layer mapping scheme corresponding to n code words;

According to another aspect of the embodiments of the present disclosure, there is provided a terminal including:

A processor;

a transceiver coupled to the processor;

wherein the processor is configured to load and execute executable instructions to implement the method of determining a relationship between a PTRS port and a DMRS port as described in the various aspects above.

According to another aspect of the disclosed embodiments, there is provided a network device including:

a processor;

a transceiver coupled to the processor;

According to another aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium having stored therein at least one instruction, at least one program, a code set, or a set of instructions, the at least one instruction, the at least one program, the code set, or the set of instructions being loaded and executed by a processor to implement a method of determining a relationship between a PTRS port and a DMRS port as described in the above aspects.

According to another aspect of the disclosed embodiments, there is provided a computer program product (or computer program) comprising computer instructions stored in a computer-readable storage medium; a processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to cause the computer device to perform the method of determining a relationship between PTRS ports and DMRS ports as described in the above aspects.

According to another aspect of the embodiments of the present disclosure, there is provided a chip including editable logic and/or program instructions for implementing the method of determining a relationship between a PTRS port and a DMRS port as described in the above aspects when the chip is running.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:

in the method for determining the relationship between the PTRS port and the DMRS port, when the terminal adopts the target layer mapping scheme corresponding to the n code words, the terminal determines the uplink DMRS port associated with the uplink PTRS port from the maximum 8 uplink DMRS ports based on the downlink control information.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a block diagram of a communication system shown in accordance with an exemplary embodiment;

fig. 2 is a flowchart illustrating a method of determining a relationship between PTRS ports and DMRS ports, according to an example embodiment;

fig. 3 is a diagram illustrating a mapping between codewords and a transport layer according to an example embodiment;

fig. 4 is a diagram illustrating a mapping between codewords and a transport layer according to another exemplary embodiment;

fig. 5 is a diagram illustrating a mapping between codewords and a transport layer according to another exemplary embodiment;

fig. 6 is a diagram illustrating a mapping between codewords and a transport layer according to another exemplary embodiment;

fig. 7 is a flowchart illustrating a method of determining a relationship between PTRS ports and DMRS ports, according to another example embodiment;

fig. 8 is a flowchart illustrating a method of determining a relationship between PTRS ports and DMRS ports, according to another example embodiment;

fig. 9 is a flowchart illustrating a method of determining a relationship between PTRS ports and DMRS ports, according to another example embodiment;

fig. 10 is a flowchart illustrating a method of determining a relationship between PTRS ports and DMRS ports, according to another example embodiment;

fig. 11 is a flowchart illustrating a method of determining a relationship between PTRS ports and DMRS ports, according to another example embodiment;

Fig. 12 is a flowchart illustrating a method of determining a relationship between PTRS ports and DMRS ports, according to another example embodiment;

fig. 13 is a flowchart illustrating a method of determining a relationship between PTRS ports and DMRS ports, according to another example embodiment;

fig. 14 is a flowchart illustrating a method of determining a relationship between PTRS ports and DMRS ports, according to another example embodiment;

fig. 15 is a block diagram illustrating an apparatus for determining a relationship between PTRS ports and DMRS ports according to an example embodiment;

fig. 16 is a block diagram illustrating an apparatus for determining a relationship between PTRS ports and DMRS ports according to another exemplary embodiment;

fig. 17 is a schematic diagram of a structure of a terminal according to an exemplary embodiment;

fig. 18 is a schematic diagram of a network device according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.

When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present disclosure. Rather, they are merely examples of apparatus and methods consistent with aspects of embodiments of the present disclosure as detailed in the accompanying claims.

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the disclosure. As used in this disclosure of embodiments and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of embodiments of the present disclosure. Depending on the context, the word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to" as used herein may also be interpreted as "in the case of … …".

For purposes of brevity and ease of understanding, the terms "greater than" or "less than" are used herein in characterizing a size relationship. But it will be appreciated by those skilled in the art that: the term "greater than" also encompasses the meaning of "greater than or equal to," less than "also encompasses the meaning of" less than or equal to.

Fig. 1 illustrates a block diagram of a communication system provided by an exemplary embodiment of the present disclosure, which may include: access network 12 and user terminals 14.

Access network 12 includes a number of network devices 120 therein. The network device (also called access network device) 120 may be a base station, which is a device deployed in an access network to provide wireless communication functionality for user terminals (simply referred to as "terminals") 14. The base stations may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. The names of base station enabled devices may vary in systems employing different radio access technologies, for example in long term evolution (Long Term Evolution, LTE) systems, called enodebs or enbs; in a 5G NR (New Radio) system, it is called a gnob or gNB. As communication technology evolves, the description of "base station" may change. For convenience of description in the embodiments of the present disclosure, the above-described devices that provide the wireless communication function for the user terminal 14 are collectively referred to as a network device. Optionally, the communication interface between the network devices 120 is an Xn interface.

The user terminal 14 may include various handheld devices, vehicle mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, as well as various forms of user equipment, mobile Stations (MSs), terminal devices (terminal devices), etc. For convenience of description, the above-mentioned devices are collectively referred to as a user terminal. The network device 120 and the user terminal 14 communicate with each other via some air interface technology, e.g. Uu interface. Optionally, the user terminal 14 supports performing a small data transfer procedure in the inactive state.

Illustratively, there are two communication scenarios between the network device 120 and the user terminal 14: an upstream communication scenario and a downstream communication scenario. Wherein, the uplink communication is to send a signal to the network device 120; downstream communication is the transmission of signals to the user terminal 14.

The technical solution of the embodiment of the present disclosure may be applied to various communication systems, for example: global system for mobile communications (Global System of Mobile Communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, LTE frequency division duplex (Frequency Division Duplex, FDD) system, LTE time division duplex (Time Division Duplex, TDD) system, long term evolution advanced (Advanced Long Term Evolution, LTE-a) system, new Radio (NR) system, evolution system of NR system, LTE (LTE-based access to Unlicensed spectrum, LTE-U) system on unlicensed frequency band, NR-U system, universal mobile telecommunication system (Universal Mobile Telecommunication System, UMTS), worldwide interoperability for microwave access (Worldwide Interoperability for Microwave Access, wiMAX) communication system, wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, wiFi), next generation communication system or other communication system, etc.

Generally, the number of connections supported by the conventional communication system is limited and easy to implement, however, as the communication technology advances, the mobile communication system will support not only conventional communication but also, for example, device-to-Device (D2D) communication, machine-to-machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) communication, and internet of vehicles (Vehicle to Everything, V2X) systems, etc. Embodiments of the present disclosure may also be applied to these communication systems.

Fig. 2 is a flowchart of a method for determining a relationship between a PTRS port and a DMRS port according to an exemplary embodiment of the present disclosure, where the method is applied to a terminal of the communication system shown in fig. 1, and includes:

step 210, determining an association relationship between an uplink PTRS port and an uplink DMRS port based on downlink control information when a target layer mapping scheme corresponding to n codewords is adopted; wherein, the maximum number of the uplink DMRS ports is 8; n has a value of 1 or 2; the target layer mapping scheme is a layer mapping scheme of type 1 or a layer mapping scheme of type 2.

Exemplary, the above layer mapping scenario for determining the association relationship between the uplink PTRS port and the uplink DMRS port includes any one of the following:

Layer mapping schemes of type 1 corresponding to 1 codeword;

layer mapping schemes of type 2 corresponding to 1 codeword;

layer mapping schemes of type 1 corresponding to 2 codewords;

type 2 layer mapping scheme corresponding to 2 codewords.

Layer mapping scheme of type 1:

taking the maximum value of the total transmission layer number as 8 layers as an example, as shown in fig. 3, the layer mapping scheme of type 1 includes 8 layer mapping schemes corresponding to 1 codeword and 2 codewords. Under the layer mapping scheme of type 1, the number of transmission layers corresponding to 1 codeword after layer mapping is greater than 0 and less than or equal to 4. The 2 codewords include a first codeword and a second codeword; the first codeword is mapped to the first transmission layer number, and the second codeword is mapped to the second transmission layer number; under the layer mapping scheme of type 1, the layer number difference between the first transmission layer number and the second transmission layer number is 0 or 1, and the sum of the first transmission layer number and the second transmission layer number is greater than 4 and less than or equal to 8. Illustratively, the type 1 layer mapping scheme for 1 codeword (including CW 0) includes the following 4 types:

CW0 maps to 1 transport layer;

for example, CW0 is mapped to transport layer 1, and the total transport layer number is 1.

CW0 maps to 2 transport layers;

For example, CW0 is mapped to transport layers 1 and 2, and the total transport layer number is 2.

CW0 maps to 3 transport layers;

for example, CW0 is mapped to transport layers 1 to 3, and the total transport layer number is 3.

CW0 maps to 4 transport layers;

for example, CW0 is mapped to transport layers 1 to 4 with a total transport layer number of 4.

The layer mapping scheme of type 1 corresponding to the 2 codewords (including CW0 and CW 1) includes the following 4 types:

CW0 maps to 2 transport layers and CW1 maps to 3 transport layers;

for example, CW0 is mapped to transport layers 1 and 2, CW1 is mapped to transport layers 3 to 5, and the total transport layer number is 5.

CW0 maps to 3 transport layers and CW1 maps to 3 transport layers;

for example, CW0 is mapped to transport layers 1 to 3, CW1 is mapped to transport layers 4 to 6, and the total number of transport layers is 5.

CW0 maps to 3 transport layers and CW1 maps to 4 transport layers;

for example, CW0 is mapped to transport layers 1 to 3, CW1 is mapped to transport layers 4 to 7, and the total number of transport layers is 5.

CW0 maps to 4 transport layers and CW1 maps to 4 transport layers.

For example, CW0 is mapped to transport layers 1 to 4, CW1 is mapped to transport layers 5 to 8, and the total transport layer number is 8.

Layer mapping scheme of type 2:

taking the maximum value of the total transmission layer number as 8 layers as an example, as shown in fig. 4, the layer mapping scheme of type 2 includes 16 layer mapping schemes corresponding to 1 codeword and 2 codewords. Under the layer mapping scheme of type 2, the number of transmission layers corresponding to 1 codeword after layer mapping is greater than 0 and less than or equal to 4.

Illustratively, as shown in fig. 4, the layer mapping scheme of type 2 corresponding to 1 codeword (including CW 0) includes the following 4 types:

CW0 maps to 1 transport layer;

CW0 maps to 2 transport layers;

CW0 maps to 3 transport layers;

CW0 maps to 4 transport layers;

The 2 codewords include a first codeword and a second codeword; the first codeword is mapped to the first transmission layer number, and the second codeword is mapped to the second transmission layer number; under the layer mapping scheme of type 2, the layer number difference between the first transmission layer number and the second transmission layer number is any value from 0 to 6, and the sum of the first transmission layer number and the second transmission layer number is greater than 1 and less than or equal to 8.

As can be seen from the above description of the layer mapping scheme of type 1, the difference between the first transmission layer number and the second transmission layer number in the layer mapping scheme of type 1 is zero or one, and the maximum layer number difference between the first transmission layer number and the second transmission layer number in the layer mapping scheme of type 2 allows greater than 1, so that the layer mapping scheme of type 2 is more flexible than the layer mapping scheme of type 1. Taking the maximum value of the total transmission layer number as 8 layers as an example, the layer number difference between the first transmission layer number and the second transmission layer number in the layer mapping scheme of the type 2 can be any value from zero to six. For example, CW0 is mapped to transport layer 1, CW1 is mapped to transport layers 2 to 7, the total transport layer number is 8, and the layer number difference between the first transport layer number and the second transport layer number is six.

Optionally, the layer mapping scheme of type 2 includes at least one of the following schemes:

transmission of layers 5 to 8 supports transmission of two codewords;

or alternatively, the first and second heat exchangers may be,

transmission of more than 4 layers (including 4 layers) supports transmission of two codewords;

or alternatively, the first and second heat exchangers may be,

transmission of more than 2 layers supports transmission of two codewords.

The transmission for 5 to 8 layers in the layer mapping scheme for type 2 supports a scheme of transmitting two codewords.

As shown in fig. 4, when the layer mapping scheme of type 2 supports transmission of two codewords for transmission of 5 to 8 layers, the layer mapping scheme of type 2 corresponding to 2 codewords (including CW0 and CW 1) includes the following 12 types:

CW0 maps to 1 transport layer and CW1 maps to 4 transport layers;

for example, CW0 is mapped to transport layer 1, CW1 is mapped to transport layers 2 to 5, and the total transport layer number is 5.

CW0 maps to 2 transport layers and CW1 maps to 3 transport layers;

CW0 maps to 1 transport layer and CW1 maps to 5 transport layers;

for example, CW0 is mapped to transport layer 1, CW1 is mapped to transport layers 2 to 6, and the total transport layer number is 6.

CW0 maps to 2 transport layers and CW1 maps to 4 transport layers;

for example, CW0 is mapped to transport layers 1 and 2, CW1 is mapped to transport layers 3 to 6, and the total number of transport layers is 6.

CW0 maps to 3 transport layers and CW1 maps to 3 transport layers;

for example, CW0 is mapped to transport layers 1 to 3, CW1 is mapped to transport layers 4 to 6, and the total number of transport layers is 6.

CW0 maps to 1 transport layer and CW1 maps to 6 transport layers;

for example, CW0 is mapped to transport layer 1, CW1 is mapped to transport layers 2 to 7, and the total transport layer number is 7.

CW0 maps to 2 transport layers and CW1 maps to 5 transport layers;

for example, CW0 is mapped to transport layers 1 and 2, CW1 is mapped to transport layers 3 to 7, and the total number of transport layers is 7.

CW0 maps to 3 transport layers and CW1 maps to 4 transport layers;

for example, CW0 is mapped to transport layers 1 to 3, CW1 is mapped to transport layers 4 to 7, and the total number of transport layers is 7.

CW0 maps to 1 transport layer and CW1 maps to 7 transport layers;

for example, CW0 is mapped to transport layer 1, CW1 is mapped to transport layers 2 to 8, and the total transport layer number is 8.

CW0 maps to 2 transport layers and CW1 maps to 6 transport layers;

for example, CW0 is mapped to transport layers 1 and 2, CW1 is mapped to transport layers 3 to 8, and the total transport layer number is 8.

CW0 maps to 3 transport layers and CW1 maps to 5 transport layers;

for example, CW0 is mapped to transport layers 1 to 3, CW1 is mapped to transport layers 4 to 8, and the total transport layer number is 8.

CW0 maps to 4 transport layers and CW1 maps to 4 transport layers.

The transmission of more than 4 layers (including 4 layers) in the layer mapping scheme for type 2 supports a scheme of transmitting two codewords.

As shown in fig. 5, when the layer mapping scheme of type 2 supports transmission of two codewords for transmission of 4 to 8 layers, the layer mapping scheme of type 2 corresponding to 2 codewords (including CW0 and CW 1) further includes the following 2 on the basis of fig. 4:

CW0 maps to 1 transport layer and CW1 maps to 3 transport layers;

for example, CW0 is mapped to transport layer 1, CW1 is mapped to transport layers 2 to 4, and the total transport layer number is 4.

CW0 maps to 2 transport layers and CW1 maps to 2 transport layers;

for example, CW0 is mapped to transport layers 1 and 2, CW1 is mapped to transport layers 3 and 4, and the total number of transport layers is 4.

The scheme of transmitting two codewords is supported for more than 2 layers of transmissions in the layer mapping scheme for type 2.

As shown in fig. 6, when the layer mapping scheme of type 2 supports transmission of two codewords for transmission of 2 to 8 layers, the layer mapping scheme of type 2 corresponding to 2 codewords (including CW0 and CW 1) further includes the following 4 types on the basis of fig. 4:

CW0 maps to 1 transport layer, CW1 maps to 1 transport layer;

for example, CW0 is mapped to transport layer 1, CW1 is mapped to transport layer 2, and the total number of transport layers is 2.

CW0 maps to 1 transport layer and CW1 maps to 2 transport layers;

for example, CW0 is mapped to transport layer 1, CW1 is mapped to transport layers 2 to 3, and the total transport layer number is 3.

CW0 maps to 1 transport layer and CW1 maps to 3 transport layers;

CW0 maps to 2 transport layers and CW1 maps to 2 transport layers;

In the above different layer mapping scenarios, the terminal determines, based on the downlink control information (Downlink Control Information, DCI), one or two Uplink DMRS ports associated with the Uplink PTRS port from the maximum 8 Uplink DMRS ports allocated correspondingly to the Physical Uplink shared CHannel (SharedCHannel, PUSCH)/Physical Uplink control CHannel (Physical Uplink Control CHannel, PUCCH).

For example, the terminal determines, in response to the number of uplink PTRS ports being 1, one uplink DMRS port associated with the uplink PTRS port from at most 8 uplink DMRS ports allocated correspondingly to the PUSCH based on an indication of an information field in the downlink control information.

For example, the terminal determines, in response to the number of uplink PTRS ports being 2, a first uplink DMRS port associated with a first uplink PTRS port and a second uplink DMRS port associated with a second uplink PTRS port from at most 8 uplink DMRS ports allocated correspondingly to the PUSCH based on an indication of an information field in the downlink control information.

Wherein the second uplink PTRS port refers to another one of the 2 uplink PTRS ports except the first uplink PTRS port; the second uplink DMRS port refers to another one of the up to 8 uplink DMRS ports except the first uplink DMRS port.

Optionally, the up to 8 uplink DMRS ports are allocated to the terminal by the network device. Illustratively, all or part of the uplink DMRS ports are allocated for use by the network device for the terminal. For example, there are 8 uplink DMRS ports available for the network device to allocate, and the network device allocates and uses part or all of the 8 uplink DMRS ports for the terminal; there are 12 uplink DMRS ports available for network equipment to allocate, and the network equipment allocates a portion of the 12 uplink DMRS ports for use by the terminal. Taking the example of using 8 uplink DMRS ports for terminal allocation, the network device allocates all 8 uplink DMRS ports for the terminal; or allocating, by the network device, port 1, port 3, port 5 and port 7 of the 8 uplink DMRS ports for the terminal; or, allocating, by the network device, ports 0 to 7 of the 12 uplink DMRS ports for the terminal; or, the network device allocates and uses port 0, port 2, port 4, port 6, port 8 and port 10 of the 12 uplink DMRS ports for the terminal.

Optionally, the number of upstream PTRS ports is configured for the terminal by the network device. For example, the terminal determines that the number of uplink PTRS ports is 1 or 2 based on the indication of the downlink control information. For another example, the terminal receives higher layer signaling, such as radio resource control (Radio Resource Control, RRC) signaling, sent by the network device; based on the indication of the higher layer signaling, the number of uplink PTRS ports is determined to be 1 or 2.

Optionally, the number of uplink PTRS ports is determined by the terminal. For example, in the scenario of PUSCH transmission based on Codebook (CB), the number of uplink PTRS ports is determined in any of the following ways:

1) In a PUSCH transmission scenario based on CB and using a full coherence (full coherence) transmission mode, the terminal responds to a sounding reference signal resource indication (Sounding reference signalResource Indicator, SRI) to indicate only one sounding reference signal (Sounding Reference Signal, SRS) resource, and then determines the number of uplink PTRS ports to be 1.

2) In a scenario of PUSCH (physical uplink shared channel) transmission based on CB and adopting a partial coherent (partial coherent) or incoherent (non-coherent) transmission mode, in response to the number of layers indicated by the wideband precoding indication (Transmitted Precoding Matrix Indicator, TPMI) being 1 or 2, the terminal determines that the number of uplink PTRS ports is 1.

3) In a case of PUSCH transmission based on CB and adopting a full coherence transmission mode, the terminal responds to the SRI to indicate only one SRS resource, and determines that the number of uplink PTRS ports is 2.

4) In a scene of PUSCH transmission based on CB and adopting a partial coherent or incoherent transmission mode, the terminal responds to the TPMI indication that the number of layers is 2 or more or 3 or more, and then determines that the number of uplink PTRS ports is 2.

Illustratively, the terminal receives downlink control information transmitted on the medium access control (Media Access Control, MAC) layer.

For example, the up to 8 uplink DMRS ports (i.e., antenna ports corresponding to the DMRS) may be antenna ports mapped to the same antenna panel or different antenna panels; that is, the up to 8 uplink DMRS ports are antenna ports mapped onto M antenna panels, where M is a positive integer less than or equal to 8. For example, 4 uplink DMRS ports out of 8 uplink DMRS ports are mapped onto the first antenna panel, and the remaining 4 uplink DMRS ports out of 8 uplink DMRS ports are mapped onto the second antenna panel.

It should be noted that, the range of the values of the maximum 8 corresponding values is 0 to 8, for example, the maximum 8 uplink DMRS ports refer to any one of 8 cases: 1 uplink DMRS port, 2 uplink DMRS ports, 3 uplink DMRS ports, 4 uplink DMRS ports, 5 uplink DMRS ports, 6 uplink DMRS ports, 7 uplink DMRS ports, 8 uplink DMRS ports.

In summary, in the method for determining the relationship between the PTRS ports and the DMRS ports provided in the embodiment, when the terminal adopts the target layer mapping scheme corresponding to the n codewords, the terminal determines, based on the downlink control information, the uplink DMRS port associated with the uplink PTRS port from the maximum 8 uplink DMRS ports, where the method is used to support implementation of the related functions of the uplink PTRS ports and the uplink DMRS ports corresponding to the maximum 8 antenna ports under different layer mapping schemes; for example, the method is used for supporting the terminal to perform co-phase error (Common Phase Error, CPE) estimation by using an uplink PTRS port corresponding to 8 antenna ports and an uplink DMRS port under a layer mapping scheme of type 1; for another example, the method is used for supporting the terminal to perform CPE estimation by using the uplink PTRS ports and the uplink DMRS ports corresponding to the 8 antenna ports under the layer mapping scheme of the type 2.

Under different layer mapping schemes, the number of the CWs is 2, and at most 8 uplink DMRS ports are divided into 2 DMRS port groups, wherein the 2 CWs correspond to the 2 DMRS port groups one by one, and an association relationship between the uplink PTRS ports and the uplink DMRS ports can be defined by a first information field in downlink control information.

As shown in fig. 7, for the case where the number of uplink PTRS ports is 1, step 210 may be implemented by step 310, as follows:

In step 310, in response to the number of uplink PTRS ports being 1, an association relationship between one uplink DMRS port and an uplink PTRS port in the DMRS port group corresponding to one CW is determined based on the first information field in the DCI.

The 2 CWs comprise a first CW and a second CW, and the 2 DMRS port groups comprise a first DMRS port group and a second DMRS port group; the first CW corresponds to a first DMRS port group and the second CW corresponds to a second DMRS port group. The terminal determines an association relationship between an uplink DMRS port and an uplink PTRS port in a first DMRS port group corresponding to a first CW based on a first information field in downlink control information; or determining an association relationship between an uplink DMRS port and an uplink PTRS port in a second DMRS port group corresponding to the second CW based on the first information field in the downlink control information.

Alternatively, in case that the number of uplink DMRS ports is 4, the first information field includes 2 bits. Alternatively, in case that the number of uplink DMRS ports is 8, the first information field includes 3 bits.

For example, the value of M bits in the first information field may be used to indicate the port number of the uplink DMRS port allocated in one DMRS port group; for example, in the case that the first information field includes 2 bits and the port numbers of the 4 uplink DMRS ports in the two DMRS port groups are 0 to 3, the value of 2 bits may be used to indicate the port number of the uplink DMRS port.

Or, the value of M bits in the first information domain may be used to indicate the ordering position of the uplink DMRS ports allocated in one DMRS port group; for example, if the first information field includes 3 bits, the uplink DMRS ports allocated in one DMRS port group are sequentially port 0, port 2, port 4, port 6, port 8, and port 10, then "000" indicates port 0, "001" indicates port 2, "010" indicates port 4, "011" indicates port 6, "100" indicates port 8, and "101" indicates port 10; for another example, if the uplink DMRS ports allocated in one DMRS port group are sequentially port 2, port 5, port 8, and port 1, then "000" indicates port 2, "001" indicates port 5, "010" indicates port 8, and "011" indicates port 1.

Illustratively, the M bits are used to indicate one uplink DMRS port in the DMRS port group that modulates the corresponding CW with the higher coding strategy (Modulation and Coding Scheme, MCS); for example, in the case that the MCS level corresponding to the first CW is higher than the MCS level corresponding to the second CW, the M bits are used to indicate that one uplink DMRS port in the first DMRS port group corresponding to the first CW is associated with the uplink PTRS port.

Or, the M bits are used for indicating one uplink DMRS port in the DMRS port group with the largest allocated port number when the MCS of the 2 CWs is the same; for example, the uplink DMRS ports in each DMRS port group are allocated by the network device, and M bits are used to indicate that one uplink DMRS port in the first DMRS port group is associated with an uplink PTRS port when the MCS level of 2 CW is the same and the number of allocated ports in the first DMRS port group is greater than the number of allocated ports in the second DMRS port group.

Or, the M bits are used for indicating one uplink DMRS port in the DMRS port group with the smallest allocated port number in the case that the MCS of the 2 CWs is the same; for example, the uplink DMRS ports in each DMRS port group are allocated by the network device, and M bits are used to indicate that one uplink DMRS port in the second DMRS port group is associated with an uplink PTRS port when the MCS level of 2 CW is the same and the number of allocated ports in the first DMRS port group is greater than the number of allocated ports in the second DMRS port group.

Or, the M bits are used to indicate one uplink DMRS port in the first DMRS port group corresponding to the first CW.

Or, the M bits are used to indicate one uplink DMRS port in the second DMRS port group corresponding to the second CW.

Wherein, under the condition that the number of the uplink DMRS ports is 4, the value of M is 2; when the number of the uplink DMRS ports is 8, the value of M is 3.

In summary, in the method for determining the relationship between the PTRS ports and the DMRS ports provided in the embodiment, when the terminal adopts the target layer mapping scheme corresponding to 2 codewords, the terminal determines, based on the downlink control information, one uplink DMRS port associated with one uplink PTRS port from the maximum of 8 uplink DMRS ports, and is configured to support association of one uplink PTRS port on one of the maximum of 8 uplink DMRS ports when the layer mapping scheme corresponding to 2 codewords is used.

As shown in fig. 8, for the case where the number of uplink PTRS ports is 2, step 210 may be implemented by steps 410 to 420 as follows:

in step 410, in response to the number of uplink PTRS ports being 2, an association relationship between a first uplink DMRS port and a first uplink PTRS port in a DMRS port group corresponding to one CW is determined based on the first information field in the DCI.

The 2 CWs comprise a first CW and a second CW, and the 2 DMRS port groups comprise a first DMRS port group and a second DMRS port group; the first CW corresponds to a first DMRS port group and the second CW corresponds to a second DMRS port group. The 2 uplink PTRS ports comprise a first uplink PTRS port and a second uplink PTRS port; the first information field in the downlink control information is used for indicating a first uplink DMRS port associated with a first uplink PTRS port. The terminal determines an association relationship between a first uplink DMRS port and a first uplink PTRS port in a first DMRS port group corresponding to the first CW based on a first information field in the downlink control information; or determining the association relationship between the first uplink DMRS port and the first uplink PTRS port in the second DMRS port group corresponding to the second CW based on the first information field in the downlink control information.

For example, the value of M bits in the first information field may be used to indicate the port number of the uplink DMRS port allocated in one DMRS port group. Or, the value of M bits in the first information domain may be used to indicate the ordering position of the uplink DMRS ports allocated in one DMRS port group.

For example, the M bits are used to indicate a first uplink DMRS port in the DMRS port group corresponding to the CW with the higher MCS; for example, in the case that the MCS level corresponding to the first CW is lower than the MCS level corresponding to the second CW, the M bits are used to indicate that the first uplink DMRS port in the second DMRS port group corresponding to the second CW is associated with the first uplink PTRS port.

Or, the M bits are used to indicate the first uplink DMRS port in the DMRS port group with the largest allocated port number if the MCS of the 2 CWs is the same; for example, the uplink DMRS ports in each DMRS port group are allocated by the network device, and M bits are used to indicate that the first uplink DMRS port in the second DMRS port group is associated with the first uplink PTRS port when the MCS level of 2 CW is the same and the number of allocated ports in the first DMRS port group is smaller than the number of allocated ports in the second DMRS port group.

Or, the M bits are used to indicate the first uplink DMRS port in the DMRS port group with the smallest allocated port number in the case that the MCS of the 2 CWs is the same; for example, the uplink DMRS ports in each DMRS port group are allocated by the network device, and M bits are used to indicate that the first uplink DMRS port in the first DMRS port group is associated with the first uplink PTRS port when the MCS level of 2 CW is the same and the number of allocated ports in the first DMRS port group is smaller than the number of allocated ports in the second DMRS port group.

Or, the M bits are used to indicate a first uplink DMRS port in the first DMRS port group corresponding to the first CW.

Or, the M bits are used to indicate the first uplink DMRS port in the second DMRS port group corresponding to the second CW.

Step 420, determining an association relationship between the second uplink DMRS port and the second uplink PTRS port in the remaining DMRS port groups based on a default rule.

The default rule defines a default association relationship between the second uplink PTRS port and the second uplink DMRS port. The terminal may determine, based on the default rule, a second uplink DMRS port associated with the second uplink PTRS port from uplink DMRS ports allocated in the remaining DMRS port groups. Alternatively, the default rule may be preconfigured by the network device for the terminal; alternatively, the default rules may be defined by a protocol.

The remaining DMRS port groups refer to another DMRS port group except for the DMRS port group where the first uplink DMRS port is located, among the 2 DMRS port groups. Illustratively, the remaining DMRS port groups are either the first DMRS port group or the second DMRS port group.

Optionally, the default rule includes any one of the following:

the second uplink DMRS port is an uplink DMRS port corresponding to the largest port number in the remaining DMRS port groups. For example, the uplink DMRS ports allocated in the first/second DMRS port group include a port 0 and a port 1, and the terminal determines an association between the port 1 and the second uplink PTRS port.

Or the second uplink DMRS port is an uplink DMRS port corresponding to the smallest port number in the remaining DMRS port groups. For example, the uplink DMRS ports allocated in the first/second DMRS port group include a port 3, a port 5, and a port 7, and the terminal determines the association between the port 3 and the second uplink PTRS port.

Or, the second uplink DMRS port is one uplink DMRS port in the remaining DMRS port group determined based on the predefined manner.

Illustratively, the predefined manner described above includes: in the case that the first uplink DMRS port is the G-th uplink DMRS port in one DMRS port group, the second uplink DMRS port is the H-th uplink DMRS port in the remaining DMRS port groups, H is the remainder of dividing the sum of G and 2 by P, P is the minimum number of ports corresponding to the 2 DMRS port groups, the value of G is a positive integer less than 8, and the values of H and P are both positive integers not greater than 4. Wherein, H is expressed as follows by adopting a formula: h= (g+2) mod P, mod representing the remainder after the division operation; when (g+2) is divided by P, H assumes a value P, and H assumes a value less than or equal to P.

For example, the first DMRS port group is allocated with 3 uplink DMRS ports, and the second DMRS port group is allocated with 5 uplink DMRS ports; the terminal determines that the 5 th uplink DMRS port in the second DMRS port group is the first uplink DMRS port, and then determines that the (5+2) mod 3=1 th uplink DMRS port in the first DMRS port group is the second uplink DMRS port based on the predefined manner.

Or, the second uplink DMRS port is an uplink DMRS port indicated by the network device. For example, the network device indicates one fixed uplink DMRS port of the 8 uplink DMRS ports as the second uplink DMRS port.

In summary, in the method for determining the relationship between the PTRS ports and the DMRS ports provided in this embodiment, when the terminal adopts the target layer mapping scheme corresponding to 2 codewords, the terminal determines, based on the downlink control information, a first uplink DMRS port associated with the first uplink PTRS port from the uplink DMRS ports allocated and used in one DMRS port group, and determines, based on the default rule, a second uplink DMRS port associated with the second uplink PTRS port from the uplink DMRS ports allocated and used in another DMRS port group, so as to support two uplink DMRS ports corresponding to two uplink PTRS ports one to one when at most 8 uplink DMRS ports are used in the layer mapping scheme corresponding to 2 codewords.

Under different layer mapping schemes, when the number of the CWs is 1, an information field in the downlink control information may be defined to indicate an uplink DMRS port associated with an uplink PTRS port from at most 8 uplink DMRS ports.

As shown in fig. 9, for the case where the number of uplink PTRS ports is 1, step 210 may be implemented by step 510, as follows:

in step 510, in response to the number of uplink PTRS ports being 1, an association relationship between one uplink DMRS port of the maximum 8 uplink DMRS ports and the uplink PTRS port is determined based on the first information field in the downlink control information.

Optionally, in the case that the number of uplink DMRS ports is 4, the first information field includes 2 bits, and the 2 bits in the first information field are used to indicate an association relationship between one uplink DMRS port of the 4 uplink DMRS ports and the uplink PTRS port. For example, the network device allocates ports 0 to 3 in the uplink DMRS port for use, wherein "00" is used to indicate port 0, "01" is used to indicate port 1, "10" is used to indicate port 2, and "11" is used to indicate port 3.

Optionally, in the case that the number of uplink DMRS ports is 8, the first information field includes 3 bits, and the 3 bits in the first information field are used to indicate an association relationship between one uplink DMRS port of the 8 uplink DMRS ports and the uplink PTRS port. For example, the network device allocates ports 4 to 11 in the uplink DMRS port for use, 000 for indicating port 4, 001 for indicating port 5, 010 for indicating port 6, 011 for indicating port 7, 100 for indicating port 8, 101 for indicating port 9, 110 for indicating port 10, and 111 for indicating port 11.

In summary, in the method for determining the relationship between the PTRS ports and the DMRS ports provided in the embodiment, when the terminal adopts the target layer mapping scheme corresponding to 1 codeword, the terminal determines, from the up to 8 uplink DMRS ports allocated to the terminal for use, the uplink DMRS port associated with the uplink PTRS port based on one information field in the downlink control information, so as to support one uplink DMRS port corresponding to one uplink PTRS port when the up to 8 uplink DMRS ports are used in the layer mapping scheme corresponding to 1 codeword.

As shown in fig. 10, for the case where the number of uplink PTRS ports is 2, step 210 may be implemented by step 610, as follows:

step 610, determining an association relationship between a first uplink DMRS port and a first uplink PTRS port of at most 8 uplink DMRS ports based on a first information field in DCI in response to the number of uplink PTRS ports being 2; and determining an association relationship between a second uplink DMRS port and a second uplink PTRS port of the maximum of 8 uplink DMRS ports based on the second information field in the DCI.

The 2 upstream PTRS ports include a first upstream PTRS port and a second upstream PTRS port. Under the condition that the number of the uplink DMRS ports is 4, the first information domain and the second information domain respectively comprise 2 bits, and the terminal determines a first uplink DMRS port from the 4 uplink DMRS ports based on the indication of the 2 bits in the first information domain; and determining a second uplink DMRS port from the 4 uplink DMRS ports based on the 2-bit indication in the second information domain, wherein the second uplink DMRS port refers to other uplink DMRS ports except the first uplink DMRS port in the 4 uplink DMRS ports.

Under the condition that the number of the uplink DMRS ports is 8, the first information domain and the second information domain respectively comprise 3 bits, and the terminal determines a first uplink DMRS port from 8 uplink DMRS ports based on the indication of the 3 bits in the first information domain; and determining a second uplink DMRS port from the 8 uplink DMRS ports based on the 3-bit indication in the second information domain, wherein the second uplink DMRS port refers to other uplink DMRS ports except the first uplink DMRS port in the 8 uplink DMRS ports.

Optionally, the first information field is a PTRS-DMRS association field (i.e., a PTRS-DMRS association field).

Optionally, the second information field refers to bits of an MCS field or reserved bits of other information fields other than the first information field on the DCI (reserved codepoint).

As shown in fig. 11, for the case where the number of uplink PTRS ports is 2, step 210 may also be implemented by step 710, as follows:

step 710, determining an association relationship between a first uplink DMRS port and a first uplink PTRS port of at most 8 uplink DMRS ports based on a first information field in DCI in response to the number of uplink PTRS ports being 2; and determining an association relationship between a second uplink DMRS port and a second uplink PTRS port of the at most 8 uplink DMRS ports based on a code point of the second information field in the DCI.

The first information field includes M bits, and M has a value of 1 or 2. The second information field comprises M bits, the code points of which are used for indicating 2 ^M And M is a positive integer.

The 2 upstream PTRS ports include a first upstream PTRS port and a second upstream PTRS port. Under the condition that the number of the uplink DMRS ports is 4, the first information domain and the second information domain respectively comprise 2 bits, and the terminal determines a first uplink DMRS port from the 4 uplink DMRS ports based on the indication of the 2 bits in the first information domain; and determining a second uplink DMRS port from the 4 uplink DMRS ports based on the code points of 2 bits in the second information domain and the corresponding relation, wherein the second uplink DMRS port refers to other uplink DMRS ports except the first uplink DMRS port in the 4 uplink DMRS ports, and the corresponding relation refers to the association relation between the second uplink PTRS port corresponding to the code points in the second information domain and the uplink DMRS port.

Under the condition that the number of the uplink DMRS ports is 8, the first information domain and the second information domain respectively comprise 3 bits, and the terminal determines a first uplink DMRS port from 8 uplink DMRS ports based on the indication of the 3 bits in the first information domain; and determining a second uplink DMRS port from the 8 uplink DMRS ports based on the 3-bit code points in the second information domain and the corresponding relation, wherein the second uplink DMRS port refers to other uplink DMRS ports except the first uplink DMRS port in the 8 uplink DMRS ports, and the corresponding relation refers to the association relation between the second uplink PTRS port corresponding to the code points in the second information domain and the uplink DMRS port.

For example, as shown in table 1, taking the value of M as 2 as an example, a code point of 2 bits may represent 4 uplink DMRS ports, and when the value of the code point is "00", a second uplink PTRS port is associated with an uplink DMRS port 3 in the corresponding relationship; when the code point value is '01', the second uplink PTRS port is associated with the uplink DMRS port 2 in the corresponding relation; when the code point value is 10, the second uplink PTRS port is associated with the uplink DMRS port 1 in the corresponding relation; when the code point takes a value of 11, the second uplink PTRS port is associated with the uplink DMRS port 0 in the corresponding relationship.

TABLE 1

Code point value	Uplink DMRS port associated with second uplink PTRS port
00	Uplink DMRS port 3
01	Uplink DMRS port 2
10	Uplink DMRS port 1
11	Uplink DMRS port 0

Optionally, the first information domain is a PTRS-DMRS association domain.

Alternatively, the second information field refers to bits of an MCS field or reserved bits of other information fields other than the first information field on the DCI.

Optionally, the correspondence is defined by the network device; alternatively, the correspondence is predefined.

Alternatively, the M is obtained by a higher layer configuration, or the M is obtained by predefining.

As shown in fig. 12, for the case where the number of uplink PTRS ports is 2, step 210 may also be implemented by step 810, as follows:

Step 810, determining an association relationship between a first uplink DMRS port and a first uplink PTRS port of at most 8 uplink DMRS ports based on a code point of a first information field in DCI and a first correspondence in response to the number of uplink PTRS ports being 2; and determining an association relationship between a second uplink DMRS port and a second uplink PTRS port of the at most 8 uplink DMRS ports based on the code point of the first information field in the DCI and the second correspondence.

Wherein, the first information field comprises M bits, and the value of M is 2 or 3; the first corresponding relation is a mapping relation between a code point corresponding to the first uplink PTRS port and the uplink DMRS port; the second corresponding relation is a mapping relation between a code point corresponding to the second uplink PTRS port and the uplink DMRS port.

Exemplary, M bits of code points are used to indicate 2 ^M Each association combination corresponds to an uplink DMRS port associated with a first uplink PTRS port and an uplink DMRS port associated with a second uplink PTRS port.

As shown in table 2, taking the value of M as 3 as an example, when the value of the code point is "000", the uplink DMRS port 0 is associated with the uplink PTRS port 0 (i.e., the first uplink PTRS port) in the first correspondence, and the uplink DMRS port 4 is associated with the uplink PTRS port 1 (i.e., the second uplink PTRS port) in the second correspondence; when the code point takes a value of '011', the uplink DMRS port 3 is associated with the uplink PTRS port 0 in the first corresponding relation, and the uplink DMRS port 5 is associated with the uplink PTRS port 1 in the second corresponding relation; when the code point has a value of "110", the uplink DMRS port 6 is associated with the uplink PTRS port 0 in the first correspondence, and the uplink DMRS port 3 is associated with the uplink PTRS port 1 in the second correspondence.

TABLE 2

Illustratively, a maximum of 8 uplink DMRS ports are divided into 2 DMRS port groups: the method comprises the steps of allocating a first uplink PTRS port to correspond to a first DMRS port group and allocating a second uplink PTRS port to correspond to a second DMRS port group; each association combination corresponds to one uplink DMRS port in the first DMRS port group associated with the first uplink PTRS port and one uplink DMRS port in the second DMRS port group associated with the second uplink PTRS port.

As shown in table 3, taking the example that the value of M is 3 and 8 uplink DMRS ports are divided into 2 DMRS port groups, when the value of a code point is "001", the uplink DMRS port 2 is associated with the uplink PTRS port 0 in the first corresponding relationship, and the uplink DMRS port 3 is associated with the uplink PTRS port 1 in the second corresponding relationship; when the value of the code point is 100, the uplink DMRS port 0 is associated with the uplink PTRS port 0 in the first corresponding relation, and the uplink DMRS port 3 is associated with the uplink PTRS port 1 in the second corresponding relation; when the code point has a value of "111", the uplink DMRS port 6 is associated with the uplink PTRS port 0 in the first correspondence, and the uplink DMRS port 1 is associated with the uplink PTRS port 1 in the second correspondence.

TABLE 3 Table 3

Optionally, the first correspondence and the second correspondence are defined by a network device; alternatively, the first correspondence is predefined with the second correspondence.

Optionally, the first information domain is a PTRS-DMRS association domain.

In summary, in the method for determining the relationship between the PTRS ports and the DMRS ports provided in the embodiment, when the terminal adopts the target layer mapping scheme corresponding to 1 codeword, based on one or two information fields in the downlink control information, from the up to 8 uplink DMRS ports allocated to the terminal for use, the terminal determines a first uplink DMRS port associated with the first uplink PTRS port and a second uplink DMRS port associated with the second uplink PTRS port, so as to support two uplink DMRS ports corresponding to two uplink PTRS ports one to one when the up to 8 uplink DMRS ports are used in the layer mapping scheme corresponding to 1 codeword.

Under different layer mapping schemes, when the number of the CWs is 1 or 2, it may be defined that one information field in the downlink control information indicates an uplink DMRS port associated with an uplink PTRS port among at most 8 uplink DMRS ports.

As shown in fig. 13, for the case where the number of uplink PTRS ports is 2, step 210 may be implemented by step 910 as follows:

in step 910, in response to the number of uplink PTRS ports being 2, an association relationship between a first uplink DMRS port and a first uplink PTRS port and an association relationship between a second uplink DMRS port and a second uplink PTRS port in at most 8 uplink DMRS ports are determined based on the first information field in the DCI.

The number of uplink DMRS ports is 2 ^M The first information field comprises 2M or 2 (M-1) bits, M having a value of 2 or 3. Optionally, M most significant bits (the Most Significant Byte, MSB) are used to indicate 2 ^M A first one of the uplink DMRS ports,m least significant bits (the Least Significant Byte, LSB) for indicating 2 ^M A second uplink DMRS port of the plurality of uplink DMRS ports; alternatively, M most significant bits are used to indicate 2 ^M A second uplink DMRS port of the uplink DMRS ports, M least significant bits for indicating 2 ^M A first one of the uplink DMRS ports.

Illustratively, the value of 3 bits of the upper significant bits is used to indicate one uplink DMRS port (i.e., the first uplink DMRS port) associated with the first uplink PTRS port among the 8 uplink DMRS ports; the value of 2 bits of the low-order significant bit is used to indicate another uplink DMRS port (i.e., the second uplink DMRS port) associated with the second uplink PTRS port among the 8 uplink DMRS ports.

Illustratively, 8 uplink DMRS ports are divided into 2 DMRS port groups: a first DMRS port group and a second DMRS port group; each DMRS port group may include 4 uplink DMRS ports. The value of 2 bits of the upper significant bits is used to indicate one uplink DMRS port (i.e., a first uplink DMRS port) associated with the first uplink PTRS port in the first DMRS port group; the value of 2 bits of the low-order significant bit is used to indicate one uplink DMRS port (i.e., the second uplink DMRS port) associated with the second uplink PTRS port in the second DMRS port group. Wherein the second DMRS port group is one DMRS port group of the two DMRS port groups other than the first DMRS port group.

As shown in table 4, when the number of uplink DMRS ports is 4 and the first information field includes 4 bits, the terminal determines that the first uplink DMRS port associated with the first uplink PTRS port 0 is the uplink DMRS port 0 and the second uplink DMRS port associated with the second uplink PTRS port 1 is the uplink DMRS port 1 in response to the 4 bits being "0001"; the terminal responds to 4 bits of 0110, and determines that a first uplink DMRS port associated with a first uplink PTRS port 0 is an uplink DMRS port 1 and a second uplink DMRS port associated with a second uplink PTRS port 1 is an uplink DMRS port 2; the terminal responds to 4 bits of 1011 to determine that a first uplink DMRS port associated with a first uplink PTRS port 0 is an uplink DMRS port 2 and a second uplink DMRS port associated with a second uplink PTRS port 1 is an uplink DMRS port 3; the terminal responds to the 4 bits being '1100', and determines that a first uplink DMRS port associated with the first uplink PTRS port 0 is an uplink DMRS port 3, and a second uplink DMRS port associated with the second uplink PTRS port 1 is an uplink DMRS port 0.

TABLE 4 Table 4

Optionally, the first information domain is a PTRS-DMRS association domain.

In summary, in the method for determining the relationship between the PTRS ports and the DMRS ports provided in this embodiment, when the terminal adopts the target layer mapping scheme corresponding to 1 or 2 codewords, the terminal determines, from at most 8 uplink DMRS ports allocated for use by the terminal, a first uplink DMRS port associated with the first uplink PTRS port and a second uplink DMRS port associated with the second uplink PTRS port based on one information field in the downlink control information.

Fig. 14 is a flowchart of a method for determining a relationship between a PTRS port and a DMRS port according to an exemplary embodiment of the present disclosure, where the method is applied to a network device of the communication system shown in fig. 1, and includes:

step 1010, sending downlink control information to the terminal, where the downlink control information is used to instruct the terminal to adopt an association relationship between an uplink PTRS port and an uplink DMRS port when the target layer mapping scheme corresponding to n codewords is adopted; wherein, the maximum number of the uplink DMRS ports is 8; n has a value of 1 or 2; the target layer mapping scheme is a layer mapping scheme of type 1 or a layer mapping scheme of type 2.

Each type of layer mapping scheme includes two cases where the number of codewords is 1 and 2:

first, for the layer mapping scheme of type 1, in the case that the number of codewords is 1, the number of transmission layers corresponding to 1 codeword after layer mapping is greater than 0 and less than or equal to 4; under the condition that the number of codewords is 2, the 2 codewords comprise a first codeword and a second codeword, the first codeword corresponds to a first transmission layer number after layer mapping, the second codeword corresponds to a second transmission layer number after layer mapping, the layer number difference between the first transmission layer number and the second transmission layer number is 0 or 1, and the sum of the first transmission layer number and the second transmission layer number is more than 4 and less than or equal to 8.

Secondly, aiming at the layer mapping scheme of the type 2, under the condition that the number of the code words is 1, the number of the corresponding transmission layers after layer mapping is carried out on the 1 code words is more than 0 and less than or equal to 4; under the condition that the number of the code words is 2, the 2 code words comprise a first code word and a second code word, the first code word corresponds to the first transmission layer number after layer mapping, the second code word corresponds to the second transmission layer number after layer mapping, and the layer number difference between the first transmission layer number and the second transmission layer number is any value from 0 to 6; and the sum of the first transmission layer number and the second transmission layer number is greater than 4 and less than or equal to 8, or the sum of the first transmission layer number and the second transmission layer number is greater than 3 and less than or equal to 8, or the sum of the first transmission layer number and the second transmission layer number is greater than 1 and less than or equal to 8.

Or for the layer mapping scheme of the type 2, under the condition that the number of the code words is 1, the number of the corresponding transmission layers after the layer mapping of the 1 code words is more than 0 and less than or equal to 3; under the condition that the number of codewords is 2, the 2 codewords comprise a first codeword and a second codeword, the first codeword corresponds to a first transmission layer number after layer mapping, the second codeword corresponds to a second transmission layer number after layer mapping, the layer number difference between the first transmission layer number and the second transmission layer number is any value from 0 to 6, and the sum of the first transmission layer number and the second transmission layer number is more than 3 and less than or equal to 8.

Or for the layer mapping scheme of type 2, under the condition that the number of codewords is 1, the number of corresponding transmission layers after layer mapping is carried out on 1 CW is 1; under the condition that the number of codewords is 2, the 2 codewords comprise a first codeword and a second codeword, the first codeword corresponds to a first transmission layer number after layer mapping, the second codeword corresponds to a second transmission layer number after layer mapping, the layer number difference between the first transmission layer number and the second transmission layer number is any value from 0 to 6, and the sum of the first transmission layer number and the second transmission layer number is more than 1 and less than or equal to 8.

Under the above different layer mapping schemes, the number of codewords is 2, and the manner in which the network device indicates the association relationship of the uplink PTRS port may include any one of the following:

the number of uplink PTRS ports is 1, and the first information field in the dci includes M bits, where the M bits are used to indicate an association relationship between one uplink DMRS port and an uplink PTRS port in the DMRS port group corresponding to one CW.

Optionally, the M bits are used to indicate an uplink DMRS port in the DMRS port group corresponding to the CW with the higher MCS;

or, the M bits are used for indicating one uplink DMRS port in the DMRS port group with the largest allocated port number when the MCS of the 2 CWs is the same;

or, the M bits are used for indicating one uplink DMRS port in the DMRS port group with the smallest allocated port number in the case that the MCS of the 2 CWs is the same;

or, the M bits are used to indicate one uplink DMRS port in the first DMRS port group corresponding to the first CW;

The number of uplink PTRS ports is 2, and the first information field in the dci is used to indicate an association relationship between a first uplink DMRS port and a first uplink PTRS port in a DMRS port group corresponding to one CW; the first information field includes M bits.

Optionally, the M bits are used to indicate a first uplink DMRS port in the DMRS port group corresponding to the CW with the higher MCS;

or, the M bits are used to indicate the first uplink DMRS port in the DMRS port group with the largest allocated port number if the MCS of the 2 CWs is the same;

or, the M bits are used to indicate the first uplink DMRS port in the DMRS port group with the smallest allocated port number in the case that the MCS of the 2 CWs is the same;

or, the M bits are used to indicate a first uplink DMRS port in the first DMRS port group corresponding to the first CW;

Optionally, the network device configures default rules for the terminal in advance, where the default rules include any one of the following:

the second uplink DMRS port is the uplink DMRS port corresponding to the maximum port number in the rest of the DMRS port groups;

or the second uplink DMRS port is an uplink DMRS port corresponding to the smallest port number in the remaining DMRS port groups;

or the second uplink DMRS port is one uplink DMRS port in the remaining DMRS port groups determined based on the predefined manner;

or, the second uplink DMRS port is an uplink DMRS port indicated by the network device.

Optionally, the predefined manner comprises: in the case that the first uplink DMRS port is the G-th uplink DMRS port in one DMRS port group, the second uplink DMRS port is the H-th uplink DMRS port in the remaining DMRS port groups, H is the remainder of dividing the sum of G and 2 by P, P is the minimum number of ports corresponding to the 2 DMRS port groups, the value of G is a positive integer less than 8, and the values of H and P are both positive integers not greater than 4.

Under the above different layer mapping schemes, the number of codewords is 1, and the manner in which the network device indicates the association relationship of the uplink PTRS port may include any one of the following:

in case the number of CWs is 1, the number of upstream PTRS ports is 1, the first information field in the dci comprises M bits for indicating 2 ^M One of the uplink DMRS ports and one of the uplink PTRS portsAnd the association relation between the two.

In case the number of CWs is 1, the number of upstream PTRS ports is 2, the first information field in DCI is used to indicate 2 ^M An association relationship between a first uplink DMRS port and a first uplink PTRS port in the plurality of uplink DMRS ports; the second information field in DCI is used for indicating 2 ^M An association relationship between a second uplink DMRS port and a second uplink PTRS port in the plurality of uplink DMRS ports; wherein the first information field comprises M bits.

In case the number of CWs is 1, the number of upstream PTRS ports is 2, the first information field in DCI is used to indicate 2 ^M An association relationship between a first uplink DMRS port and a first uplink PTRS port in the plurality of uplink DMRS ports; the code point of the second information field in DCI is used for indicating 2 ^M An association relationship between a second uplink DMRS port and a second uplink PTRS port in the plurality of uplink DMRS ports; wherein the first information field comprises M bits.

In case the number of CWs is 1, the number of uplink PTRS ports is 2, the code point of the first information field in the dci is used to indicate 2 in the first correspondence ^M An association relationship between a first uplink DMRS port and a first uplink PTRS port in the plurality of uplink DMRS ports; the code point of the first information field in the DCI is used for indicating 2 in the second corresponding relation ^M An association relationship between a second uplink DMRS port and a second uplink PTRS port in the plurality of uplink DMRS ports; wherein the first information field comprises M bits; the first corresponding relation is a mapping relation between a code point corresponding to the first uplink PTRS port and the uplink DMRS port; the second corresponding relation is a mapping relation between a code point corresponding to the second uplink PTRS port and the uplink DMRS port.

Under the above different layer mapping schemes, the number of codewords is 1 or 2, and the manner in which the network device indicates the association relationship of the uplink PTRS ports may include:

the number of upstream PTRS ports is 2, the first information field in the dci comprises 2M bits, 2M bits being used to indicate 2 ^M And the association relation between the first uplink DMRS port and the first uplink PTRS port and the association relation between the second uplink DMRS port and the second uplink PTRS port in the uplink DMRS ports.

Optionally, the 2M bits include M most significant bits and M least significant bits; the M most significant bits are used for indicating a first uplink DMRS port, and the M least significant bits are used for indicating a second uplink DMRS port; or, M most significant bits are used to indicate the second uplink DMRS port, and M least significant bits are used to indicate the first uplink DMRS port.

Optionally, the value of M is 2 or 3.

Optionally, the first information domain is a PTRS-DMRS association domain.

In summary, in the method for determining the relationship between the PTRS port and the DMRS port provided in the embodiment, the network device sends the downlink control information to the terminal, so that the terminal determines, based on the downlink control information, the uplink DMRS port associated with the uplink PTRS port from the maximum of 8 uplink DMRS ports, where the uplink PTRS port and the uplink DMRS port are corresponding to the maximum of 8 antenna ports under different layer mapping schemes, for example, the method is used to support co-phase error estimation between the uplink PTRS port and the uplink DMRS port, where the terminal uses the maximum of 8 antenna ports under different layer mapping schemes.

Fig. 15 shows a block diagram of an apparatus for determining a relationship between a PTRS port and a DMRS port, which may be implemented as part or all of a UE by software, hardware, or a combination of both, according to an exemplary embodiment of the present disclosure, including:

a first processing module 1110, configured to determine, based on DCI, an association between an uplink PTRS port and an uplink DMRS port in the case where n target layer mapping schemes corresponding to CWs are adopted;

In some embodiments, the 2 codewords comprise a first codeword and a second codeword; the first codeword is mapped to a first transmission layer number, and the second codeword is mapped to a second transmission layer number;

under the layer mapping scheme of the type 1, the layer number difference between the first transmission layer number and the second transmission layer number is 0 or 1;

under the layer mapping scheme of the type 2, the layer number difference between the first transmission layer number and the second transmission layer number is any value from 0 to 6.

In some embodiments, under the layer mapping scheme of type 1, a sum of the first transport layer number and the second transport layer number is greater than 4 and less than or equal to 8;

under the layer mapping scheme of the type 2, the sum of the first transmission layer number and the second transmission layer number is greater than 4 and less than or equal to 8; or, the sum of the first transmission layer number and the second transmission layer number is greater than 3 and less than or equal to 8; alternatively, the sum of the first transmission layer number and the second transmission layer number is greater than 1 and less than or equal to 8.

In some embodiments, in the case where the number of CWs is 2, the 8 uplink DMRS ports are divided into 2 DMRS port groups, the 2 CWs are in one-to-one correspondence with the 2 DMRS port groups;

a first processing module 1110, configured to determine, based on a first information field in the DCI, an association between an uplink DMRS port in a DMRS port group corresponding to the CW and the uplink PTRS port in response to the number of uplink PTRS ports being 1; the first information field includes 3 bits.

In some embodiments, the 3 bits are used to indicate to modulate an uplink DMRS port in the DMRS port group corresponding to the CW with a higher coding strategy MCS;

Or, the 3 bits are used for indicating one uplink DMRS port in the DMRS port group with the largest allocated port number when the MCS of the 2 CWs is the same;

or, the 3 bits are used for indicating one uplink DMRS port in the DMRS port group with the smallest allocated port number when the MCS of the 2 CWs is the same;

or, the 3 bits are used to indicate one uplink DMRS port in the first DMRS port group corresponding to the first CW;

or, the 3 bits are used to indicate one uplink DMRS port in the second DMRS port group corresponding to the second CW.

a first processing module 1110, configured to determine, based on a first information field in the DCI, an association between a first uplink DMRS port and a first uplink PTRS port in a DMRS port group corresponding to the CW in response to the number of uplink PTRS ports being 2; the first information field includes 3 bits.

In some embodiments, the 3 bits are used to indicate the first uplink DMRS port in the DMRS port group corresponding to the CW with higher MCS;

Or, the 3 bits are used to indicate the first uplink DMRS port in the DMRS port group with the largest allocated port number if the MCS of the 2 CWs is the same;

or, the 3 bits are used to indicate the first uplink DMRS port in the DMRS port group with the smallest allocated port number if the MCS of the 2 CWs is the same;

or, the 3 bits are used to indicate the first uplink DMRS port in the first DMRS port group corresponding to the first CW;

or, the 3 bits are used to indicate the first uplink DMRS port in the second DMRS port group corresponding to the second CW.

In some embodiments, the first processing module 1110 is configured to determine an association between the second uplink DMRS port and the second uplink PTRS port in the remaining DMRS port groups based on a default rule.

In some embodiments, the default rule includes any one of:

the second uplink DMRS port is an uplink DMRS port corresponding to the largest port number in the remaining DMRS port groups;

or, the second uplink DMRS port is one uplink DMRS port in the remaining DMRS port group determined based on a predefined manner;

In some embodiments, the predefined manner comprises:

and under the condition that the first uplink DMRS port is the G-th uplink DMRS port in the DMRS port group, the second uplink DMRS port is the H-th uplink DMRS port in the rest DMRS port groups, H is the remainder of dividing the sum of G and 2 by P, P is the minimum port number corresponding to the 2 DMRS port groups, the value of G is a positive integer less than 8, and the values of H and P are all positive integers not more than 4.

In some embodiments, under the layer mapping scheme of the type 1, the number of transmission layers corresponding to the 1 CW after layer mapping is greater than 0 and less than or equal to 4;

under the layer mapping scheme of the type 2, the number of transmission layers corresponding to the 1 CW after layer mapping is greater than 0 and less than or equal to 4; or the number of transmission layers corresponding to the 1 CW after layer mapping is more than 0 and less than or equal to 3; or the number of transmission layers corresponding to the 1 CW after layer mapping is 1.

In some embodiments, the first processing module 1110 is configured to determine, in response to the number of uplink PTRS ports being 1, an association relationship between one of the 8 uplink DMRS ports and the uplink PTRS port based on a first information field in the DCI, if the number of CW is 1; the first information field includes 3 bits.

In some embodiments, the first processing module 1110 is configured to determine, in response to the number of uplink PTRS ports being 2, an association between a first uplink DMRS port of the 8 uplink DMRS ports and a first uplink PTRS port based on a first information field in the DCI, the first information field including 3 bits, if the number of CW is 1; and determining an association relationship between a second uplink DMRS port and a second uplink PTRS port in the 8 uplink DMRS ports based on a second information field in the DCI.

In some embodiments, the first processing module 1110 is configured to determine, in response to the number of uplink PTRS ports being 2, an association between a first uplink DMRS port of the 8 uplink DMRS ports and a first uplink PTRS port based on a first information field in the DCI, the first information field including 3 bits, if the number of CW is 1; and determining an association relationship between a second uplink DMRS port and a second uplink PTRS port in the 8 uplink DMRS ports based on a code point of a second information field in the DCI.

In some embodiments, the second information field refers to bits of an MCS field or reserved bits of other information fields other than the first information field on the DCI.

In some embodiments, the first processing module 1110 is configured to determine, in response to the number of uplink PTRS ports being 2, an association between a first uplink DMRS port and a first uplink PTRS port of the 8 uplink DMRS ports based on a first correspondence between a code point of a first information field in the DCI, if the number of CW is 1; determining an association relationship between a second uplink DMRS port and a second uplink PTRS port in the 8 uplink DMRS ports based on a code point of a first information field in the DCI and a second correspondence;

wherein the first information field comprises 3 bits; the first corresponding relation is a mapping relation between a code point corresponding to the first uplink PTRS port and an uplink DMRS port; the second corresponding relation is a mapping relation between a code point corresponding to the second uplink PTRS port and an uplink DMRS port.

In some embodiments, the first processing module 1110 is configured to determine, based on a first information field in the DCI, an association between a first uplink DMRS port and a first uplink PTRS port and an association between a second uplink DMRS port and a second uplink PTRS port in response to the number of uplink PTRS ports being 2; the first information field includes 6 bits.

In some embodiments, the 6 bits include 3 most significant bits MSBs and 3 least significant bits LSBs;

the 3 most significant bits are used to indicate the first uplink DMRS port, and the 3 least significant bits are used to indicate the second uplink DMRS port;

or, the 3 most significant bits are used to indicate the second uplink DMRS port, and the 3 least significant bits are used to indicate the first uplink DMRS port.

Fig. 16 shows a block diagram of an apparatus for determining a relationship between PTRS ports and DMRS ports, which may be implemented as part or all of a network device by software, hardware, or a combination of both, according to an exemplary embodiment of the present disclosure, and includes:

a second sending module 1120, configured to send downlink control information to the terminal, where the downlink control information is used to indicate an association relationship between an uplink PTRS port and an uplink DMRS port when the terminal adopts a target layer mapping scheme corresponding to n codewords;

The number of the uplink PTRS ports is 1, the first information field in the DCI includes 3 bits, where the 3 bits are used to indicate an association relationship between one uplink DMRS port in the DMRS port group corresponding to the CW and the uplink PTRS port.

In some embodiments, the 3 bits are used to indicate one uplink DMRS port in the DMRS port group corresponding to the CW with higher MCS;

The number of the uplink PTRS ports is 2, and a first information field in the DCI is used to indicate an association relationship between a first uplink DMRS port and a first uplink PTRS port in a DMRS port group corresponding to the CW; the first information field includes 3 bits.

In some embodiments, in a case where the number of CW is 1, the number of uplink PTRS ports is 1, and the first information field in the DCI includes 3 bits, where the 3 bits are used to indicate an association relationship between one of the 8 uplink DMRS ports and the uplink PTRS port.

In some embodiments, in a case where the number of CW is 1, the number of uplink PTRS ports is 2, and a first information field in the DCI is used to indicate an association relationship between a first uplink DMRS port and a first uplink PTRS port in the 8 uplink DMRS ports, where the first information field includes 3 bits; the second information field in the DCI is used to indicate an association relationship between a second uplink DMRS port and a second uplink PTRS port in the 8 uplink DMRS ports.

In some embodiments, in a case where the number of CW is 1, the number of uplink PTRS ports is 2, and a first information field in the DCI is used to indicate an association relationship between a first uplink DMRS port and a first uplink PTRS port in the 8 uplink DMRS ports, where the first information field includes 3 bits; and the code point of the second information field in the DCI is used to indicate an association relationship between a second uplink DMRS port and a second uplink PTRS port in the 8 uplink DMRS ports.

In some embodiments, when the number of CW is 1, the number of uplink PTRS ports is 2, and a code point of a first information field in the DCI is used to indicate an association between a first uplink DMRS port and a first uplink PTRS port in the 8 uplink DMRS ports in a first correspondence; the code point of the first information field in the DCI is used to indicate an association relationship between a second uplink DMRS port and a second uplink PTRS port in the 8 uplink DMRS ports in the second correspondence;

In some embodiments, the number of uplink PTRS ports is 2, and the first information field in the DCI includes 6 bits, where the 6 bits are used to indicate an association between a first uplink DMRS port and a first uplink PTRS port and an association between a second uplink DMRS port and a second uplink PTRS port in the 8 uplink DMRS ports.

In some embodiments, the 6 bits include 3 most significant bits and 3 least significant bits;

Fig. 17 shows a schematic structural diagram of a UE according to an exemplary embodiment of the present disclosure, where the UE includes: a processor 1201, a receiver 1202, a transmitter 1203, a memory 1204, and a bus 1205.

The processor 1201 includes one or more processing cores, and the processor 1201 executes various functional applications and information processing by running software programs and modules.

The receiver 1202 and the transmitter 1203 may be implemented as one communication component, which may be a communication chip.

The memory 1204 is connected to the processor 1201 by a bus 1205.

The memory 1204 may be used for storing at least one instruction that the processor 1201 is configured to execute to implement the various steps of the method embodiments described above.

Further, the memory 1204 may be implemented by any type or combination of volatile or nonvolatile memory devices including, but not limited to: magnetic or optical disks, electrically erasable programmable Read-Only Memory (EEPROM, electrically Erasable Programmable Read Only Memory), erasable programmable Read-Only Memory (EPROM, erasable Programmable Read Only Memory), static Random-Access Memory (SRAM), read Only Memory (ROM), magnetic Memory, flash Memory, programmable Read-Only Memory (PROM, programmable Read Only Memory).

In an exemplary embodiment, a non-transitory computer-readable storage medium, such as a memory, comprising instructions executable by a processor of a UE to perform the above-described method of determining a relationship between a PTRS port and a DMRS port is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random-Access Memory (RAM), a compact disc read-only Memory (CD-ROM, compact Disc Read Only Memory), a magnetic tape, a floppy disk, an optical data storage device, and the like.

A non-transitory computer readable storage medium, which when executed by a processor of a UE, causes the UE to perform the above-described method of determining a relationship between PTRS ports and DMRS ports.

Fig. 18 is a block diagram illustrating a network device 1300 according to an example embodiment. The network device 1300 may be a base station.

The network device 1300 may include: processor 1301, receiver 1302, transmitter 1303 and memory 1304. The receiver 1302, transmitter 1303 and memory 1304 are respectively connected to the processor 1301 through buses.

Processor 1301 includes one or more processing cores, and processor 1301 executes software programs and modules to perform the method for determining a relationship between a PTRS port and a DMRS port provided by the embodiments of the present disclosure. Memory 1304 may be used to store software programs and modules. In particular, the memory 1304 may store an operating system 13041, at least one application module 13042 required for functionality. The receiver 1302 is configured to receive communication data transmitted by other devices, and the transmitter 1303 is configured to transmit communication data to other devices.

An exemplary embodiment of the present disclosure also provides a computer readable storage medium having stored therein at least one instruction, at least one program, a code set, or a set of instructions, where the at least one instruction, the at least one program, the code set, or the set of instructions are loaded and executed by the processor to implement the method for determining a relationship between a PTRS port and a DMRS port provided in the above respective method embodiments.

An exemplary embodiment of the present disclosure also provides a computer program product comprising computer instructions stored in a computer-readable storage medium; the processor of the computer device reads the computer instructions from the computer readable storage medium, and executes the computer instructions, so that the computer device performs the method for determining the relationship between the PTRS port and the DMRS port provided in the above method embodiments.

It should be understood that references herein to "a plurality" are to two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

A method of determining a relationship between a PTRS port and a DMRS port, the method performed by a terminal, the method comprising:

under the condition that a target layer mapping scheme corresponding to n code words CW is adopted, determining an association relation between an uplink phase tracking reference signal PTRS port and an uplink demodulation reference signal DMRS port based on downlink control information DCI;

Wherein, the maximum number of the uplink DMRS ports is 8; the value of n is 1 or 2; the target layer mapping scheme is a layer mapping scheme of type 1 or a layer mapping scheme of type 2.
The method of claim 1, wherein the 2 codewords comprise a first codeword and a second codeword; the first codeword is mapped to a first transmission layer number, and the second codeword is mapped to a second transmission layer number;

under the layer mapping scheme of the type 1, the layer number difference between the first transmission layer number and the second transmission layer number is 0 or 1;

under the layer mapping scheme of the type 2, the layer number difference between the first transmission layer number and the second transmission layer number is any value from 0 to 6.
The method of claim 2, wherein the step of determining the position of the substrate comprises,

under the layer mapping scheme of the type 1, the sum of the first transmission layer number and the second transmission layer number is greater than 4 and less than or equal to 8;

under the layer mapping scheme of the type 2, the sum of the first transmission layer number and the second transmission layer number is greater than 4 and less than or equal to 8; or, the sum of the first transmission layer number and the second transmission layer number is greater than 3 and less than or equal to 8; alternatively, the sum of the first transmission layer number and the second transmission layer number is greater than 1 and less than or equal to 8.
The method of claim 3, wherein in the case where the number of CWs is 2, the 8 uplink DMRS ports are divided into 2 DMRS port groups, the 2 CWs are in one-to-one correspondence with the 2 DMRS port groups;

the determining, based on DCI, an association between an uplink PTRS port and an uplink DMRS port includes:

determining an association relationship between an uplink DMRS port in a DMRS port group corresponding to the CW and the uplink PTRS port based on a first information field in the DCI in response to the number of the uplink PTRS ports being 1; the first information field includes 3 bits.
The method of claim 4, wherein the step of determining the position of the first electrode is performed,

the 3 bits are used for indicating one uplink DMRS port in the DMRS port group corresponding to the CW with the higher modulation and coding strategy MCS;

or,

the 3 bits are used for indicating one uplink DMRS port in the DMRS port group with the largest allocated port number under the condition that the MCSs of the 2 CWs are the same;

or,

the 3 bits are used for indicating one uplink DMRS port in the DMRS port group with the smallest allocated port number under the condition that the MCSs of the 2 CWs are the same;

or,

The 3 bits are used for indicating one uplink DMRS port in the first DMRS port group corresponding to the first CW;

or,

the 3 bits are used to indicate an uplink DMRS port in the second DMRS port group corresponding to the second CW.
The method of claim 3, wherein in the case where the number of CWs is 2, the 8 uplink DMRS ports are divided into 2 DMRS port groups, the 2 CWs are in one-to-one correspondence with the 2 DMRS port groups;

the determining, based on DCI, an association between an uplink PTRS port and an uplink DMRS port includes:

determining an association relationship between a first uplink DMRS port and a first uplink PTRS port in a DMRS port group corresponding to the CW based on a first information field in the DCI in response to the number of uplink PTRS ports being 2; the first information field includes 3 bits.
The method of claim 6, wherein the step of providing the first layer comprises,

the 3 bits are used for indicating the first uplink DMRS port in the DMRS port group corresponding to the CW with higher MCS;

or,

the 3 bits are used for indicating the first uplink DMRS port in the DMRS port group with the largest allocated port number when the MCS of the 2 CWs is the same;

Or,

the 3 bits are used for indicating the first uplink DMRS port in the DMRS port group with the smallest allocated port number when the MCS of the 2 CWs is the same;

or,

the 3 bits are used for indicating the first uplink DMRS port in the first DMRS port group corresponding to the first CW;

or,

the 3 bits are used to indicate the first uplink DMRS port in the second DMRS port group corresponding to the second CW.
The method according to claim 6 or 7, characterized in that the method further comprises:

and determining the association relation between the second uplink DMRS ports and the second uplink PTRS ports in the rest of the DMRS port groups based on a default rule.
The method of claim 8, wherein the default rule comprises any one of:

the second uplink DMRS port is an uplink DMRS port corresponding to the largest port number in the remaining DMRS port groups;

or,

the second uplink DMRS port is an uplink DMRS port corresponding to the smallest port number in the remaining DMRS port groups;

or,

the second uplink DMRS port is one uplink DMRS port in the remaining DMRS port group determined based on a predefined manner;

Or,

the second uplink DMRS port is an uplink DMRS port indicated by the network device.
The method according to claim 9, wherein the predefined manner comprises:

and under the condition that the first uplink DMRS port is the G-th uplink DMRS port in the DMRS port group, the second uplink DMRS port is the H-th uplink DMRS port in the rest DMRS port groups, H is the remainder of dividing the sum of G and 2 by P, P is the minimum port number corresponding to the 2 DMRS port groups, the value of G is a positive integer less than 8, and the values of H and P are all positive integers not more than 4.
The method of claim 1, wherein the step of determining the position of the substrate comprises,

under the layer mapping scheme of the type 1, the number of transmission layers corresponding to the 1 CW after layer mapping is greater than 0 and less than or equal to 4;

under the layer mapping scheme of the type 2, the number of transmission layers corresponding to the 1 CW after layer mapping is greater than 0 and less than or equal to 4; or the number of transmission layers corresponding to the 1 CW after layer mapping is more than 0 and less than or equal to 3; or the number of transmission layers corresponding to the 1 CW after layer mapping is 1.
The method of claim 11, wherein the determining, based on DCI, an association between an uplink PTRS port and an uplink DMRS port if the number of CWs is 1 comprises:

Determining an association relationship between one uplink DMRS port of the 8 uplink DMRS ports and the uplink PTRS port based on a first information field in the DCI in response to the number of the uplink PTRS ports being 1; the first information field includes 3 bits.
The method of claim 11, wherein the determining, based on DCI, an association between an uplink PTRS port and an uplink DMRS port if the number of CWs is 1 comprises:

determining an association relationship between a first uplink DMRS port and a first uplink PTRS port of the 8 uplink DMRS ports based on a first information field in the DCI, the first information field including 3 bits, in response to the number of uplink PTRS ports being 2; and

and determining an association relationship between a second uplink DMRS port and a second uplink PTRS port in the 8 uplink DMRS ports based on a second information field in the DCI.
The method of claim 11, wherein the determining, based on DCI, an association between an uplink PTRS port and an uplink DMRS port if the number of CWs is 1 comprises:

determining an association relationship between a first uplink DMRS port and a first uplink PTRS port of the 8 uplink DMRS ports based on a first information field in the DCI, the first information field including 3 bits, in response to the number of uplink PTRS ports being 2; and

And determining the association relation between a second uplink DMRS port and a second uplink PTRS port in the 8 uplink DMRS ports based on the code point of the second information field in the DCI.
The method of claim 13 or 14, wherein the second information field refers to bits of an MCS field or reserved bits of other information fields other than the first information field on the DCI.
The method of claim 11, wherein the determining, based on DCI, an association between an uplink PTRS port and an uplink DMRS port if the number of CWs is 1 comprises:

determining an association relationship between a first uplink DMRS port and a first uplink PTRS port in the 8 uplink DMRS ports based on a code point of a first information field in the DCI and a first correspondence in response to the number of the uplink PTRS ports being 2; and

determining an association relationship between a second uplink DMRS port and a second uplink PTRS port in the 8 uplink DMRS ports based on a code point of a first information field in the DCI and a second correspondence;

wherein the first information field comprises 3 bits; the first corresponding relation is a mapping relation between a code point corresponding to the first uplink PTRS port and an uplink DMRS port; the second corresponding relation is a mapping relation between a code point corresponding to the second uplink PTRS port and an uplink DMRS port.
The method according to claim 3 or 11, wherein the determining an association between an uplink PTRS port and an uplink DMRS port based on DCI comprises:

determining an association relationship between a first uplink DMRS port and a first uplink PTRS port and an association relationship between a second uplink DMRS port and a second uplink PTRS port in the 8 uplink DMRS ports based on a first information field in the DCI in response to the number of the uplink PTRS ports being 2; the first information field includes 6 bits.
The method of claim 17, wherein the 6 bits include 3 most significant bits MSBs and 3 least significant bits LSBs;

the 3 most significant bits are used to indicate the first uplink DMRS port, and the 3 least significant bits are used to indicate the second uplink DMRS port;

or,

the 3 most significant bits are used to indicate the second uplink DMRS port, and the 3 least significant bits are used to indicate the first uplink DMRS port.
A method of determining a relationship between PTRS ports and DMRS ports, the method performed by a network device, the method comprising:

transmitting downlink control information to a terminal, wherein the downlink control information is used for indicating the association relationship between an uplink PTRS port and an uplink DMRS port under the condition that the terminal adopts a target layer mapping scheme corresponding to n code words;

Wherein, the maximum number of the uplink DMRS ports is 8; the value of n is 1 or 2; the target layer mapping scheme is a layer mapping scheme of type 1 or a layer mapping scheme of type 2.
The method of claim 19, wherein the 2 codewords comprise a first codeword and a second codeword; the first codeword is mapped to a first transmission layer number, and the second codeword is mapped to a second transmission layer number;

under the layer mapping scheme of the type 1, the layer number difference between the first transmission layer number and the second transmission layer number is 0 or 1;

under the layer mapping scheme of the type 2, the layer number difference between the first transmission layer number and the second transmission layer number is any value from 0 to 6.
The method of claim 20, wherein the step of determining the position of the probe is performed,

under the layer mapping scheme of the type 1, the sum of the first transmission layer number and the second transmission layer number is greater than 4 and less than or equal to 8;

under the layer mapping scheme of the type 2, the sum of the first transmission layer number and the second transmission layer number is greater than 4 and less than or equal to 8; or, the sum of the first transmission layer number and the second transmission layer number is greater than 3 and less than or equal to 8; alternatively, the sum of the first transmission layer number and the second transmission layer number is greater than 1 and less than or equal to 8.
The method of claim 21, wherein in the case where the number of CWs is 2, the 8 uplink DMRS ports are divided into 2 DMRS port groups, the 2 CWs are in one-to-one correspondence with the 2 DMRS port groups;

the number of the uplink PTRS ports is 1, the first information field in the DCI includes 3 bits, where the 3 bits are used to indicate an association relationship between one uplink DMRS port in the DMRS port group corresponding to the CW and the uplink PTRS port.
The method of claim 22, wherein the step of determining the position of the probe is performed,

the 3 bits are used for indicating one uplink DMRS port in the DMRS port group corresponding to the CW with higher MCS;

or,

the 3 bits are used for indicating one uplink DMRS port in the DMRS port group with the largest allocated port number under the condition that the MCSs of the 2 CWs are the same;

or,

the 3 bits are used for indicating one uplink DMRS port in the DMRS port group with the smallest allocated port number under the condition that the MCSs of the 2 CWs are the same;

or,

the 3 bits are used for indicating one uplink DMRS port in the first DMRS port group corresponding to the first CW;

or,

the 3 bits are used to indicate an uplink DMRS port in the second DMRS port group corresponding to the second CW.
The method of claim 21, wherein in the case where the number of CWs is 2, the 8 uplink DMRS ports are divided into 2 DMRS port groups, the 2 CWs are in one-to-one correspondence with the 2 DMRS port groups;

the number of the uplink PTRS ports is 2, and a first information field in the DCI is used to indicate an association relationship between a first uplink DMRS port and a first uplink PTRS port in a DMRS port group corresponding to the CW; the first information field includes 3 bits.
The method of claim 24, wherein the step of determining the position of the probe is performed,

the 3 bits are used for indicating the first uplink DMRS port in the DMRS port group corresponding to the CW with higher MCS;

or,

the 3 bits are used for indicating the first uplink DMRS port in the DMRS port group with the largest allocated port number when the MCS of the 2 CWs is the same;

or,

the 3 bits are used for indicating the first uplink DMRS port in the DMRS port group with the smallest allocated port number when the MCS of the 2 CWs is the same;

or,

the 3 bits are used for indicating the first uplink DMRS port in the first DMRS port group corresponding to the first CW;

Or,

the 3 bits are used to indicate the first uplink DMRS port in the second DMRS port group corresponding to the second CW.
The method of claim 19, wherein the step of determining the position of the probe comprises,

under the layer mapping scheme of the type 1, the number of transmission layers corresponding to the 1 CW after layer mapping is greater than 0 and less than or equal to 4;

under the layer mapping scheme of the type 2, the number of transmission layers corresponding to the 1 CW after layer mapping is greater than 0 and less than or equal to 4; or the number of transmission layers corresponding to the 1 CW after layer mapping is more than 0 and less than or equal to 3; or the number of transmission layers corresponding to the 1 CW after layer mapping is 1.
The method of claim 26, wherein the number of uplink PTRS ports is 1 if the number of CW is 1, and wherein the first information field in the DCI includes 3 bits, and wherein the 3 bits are used to indicate an association between one of the 8 uplink DMRS ports and the uplink PTRS port.
The method of claim 26, wherein the number of uplink PTRS ports is 2 if the number of CW is 1, and wherein a first information field in the DCI is used to indicate an association between a first uplink DMRS port of the 8 uplink DMRS ports and a first uplink PTRS port, the first information field including 3 bits; the second information field in the DCI is used to indicate an association relationship between a second uplink DMRS port and a second uplink PTRS port in the 8 uplink DMRS ports.
The method of claim 26, wherein the number of uplink PTRS ports is 2 if the number of CW is 1, and wherein a first information field in the DCI is used to indicate an association between a first uplink DMRS port of the 8 uplink DMRS ports and a first uplink PTRS port, the first information field including 3 bits; and the code point of the second information field in the DCI is used to indicate an association relationship between a second uplink DMRS port and a second uplink PTRS port in the 8 uplink DMRS ports.
The method of claim 28 or 29, wherein the second information field refers to bits of an MCS field or reserved bits of other information fields other than the first information field on the DCI.
The method of claim 26, wherein in the case where the number of CWs is 1, the number of uplink PTRS ports is 2, and a code point of a first information field in the DCI is used to indicate an association between a first uplink DMRS port and a first uplink PTRS port of the 8 uplink DMRS ports in a first correspondence; the code point of the first information field in the DCI is used to indicate an association relationship between a second uplink DMRS port and a second uplink PTRS port in the 8 uplink DMRS ports in the second correspondence;

Wherein the first information field comprises 3 bits; the first corresponding relation is a mapping relation between a code point corresponding to the first uplink PTRS port and an uplink DMRS port; the second corresponding relation is a mapping relation between a code point corresponding to the second uplink PTRS port and an uplink DMRS port.
The method of claim 21 or 26, wherein the number of uplink PTRS ports is 2, and the first information field in the DCI includes 6 bits, where the 6 bits are used to indicate an association between a first uplink DMRS port and a first uplink PTRS port and an association between a second uplink DMRS port and a second uplink PTRS port in the 8 uplink DMRS ports.
The method of claim 32, wherein the 6 bits comprise 3 most significant bits and 3 least significant bits;

the 3 most significant bits are used to indicate the first uplink DMRS port, and the 3 least significant bits are used to indicate the second uplink DMRS port;

or,

the 3 most significant bits are used to indicate the second uplink DMRS port, and the 3 least significant bits are used to indicate the first uplink DMRS port.
An apparatus for determining a relationship between a PTRS port and a DMRS port, the apparatus comprising:

the first processing module is configured to determine an association relationship between an uplink PTRS port and an uplink DMRS port based on DCI under the condition that n CW corresponding target layer mapping schemes are adopted;

wherein, the maximum number of the uplink DMRS ports is 8; the value of n is 1 or 2; the target layer mapping scheme is a layer mapping scheme of type 1 or a layer mapping scheme of type 2.
An apparatus for determining a relationship between a PTRS port and a DMRS port, the apparatus comprising:

the second sending module is configured to send downlink control information to the terminal, wherein the downlink control information is used for indicating the association relationship between the uplink PTRS port and the uplink DMRS port under the condition that the terminal adopts a target layer mapping scheme corresponding to n code words;

wherein, the maximum number of the uplink DMRS ports is 8; the value of n is 1 or 2; the target layer mapping scheme is a layer mapping scheme of type 1 or a layer mapping scheme of type 2.
A terminal, the terminal comprising:

a processor;

a transceiver coupled to the processor;

Wherein the processor is configured to load and execute executable instructions to implement the method of determining a relationship between a PTRS port and a DMRS port as claimed in any one of claims 1 to 18.
A network device, the network device comprising:

a processor;

a transceiver coupled to the processor;

wherein the processor is configured to load and execute executable instructions to implement the method of determining a relationship between a PTRS port and a DMRS port as claimed in any one of claims 19 to 33.
A computer readable storage medium having stored therein at least one instruction, at least one program, a set of codes, or a set of instructions loaded and executed by a processor to implement a method of determining a relationship between a PTRS port and a DMRS port according to any one of claims 1 to 18, or a method of determining a relationship between a PTRS port and a DMRS port according to any one of claims 19 to 33.
A computer program product, the computer program product comprising computer instructions stored in a computer readable storage medium; a processor of a computer device reads the computer instructions from the computer readable storage medium, the processor executing the computer instructions, causing the computer device to perform the method of determining a relationship between a PTRS port and a DMRS port according to any one of claims 1 to 18, or the method of determining a relationship between a PTRS port and a DMRS port according to any one of claims 19 to 33.